9. Joanna Jedrzejczyk
Her name gives UFC commentator Mike Goldberg fits. Joking aside, Jedrzejczyk has joined some exclusive company in what was until a few years ago a male-dominated sport, and the fact that she has not yet turned 30 means she could carve out a much more significant legacy for herself by the time her career comes to an end.
Jedrzejczyk currently owns a perfect 12-0 record. At 28 years of age, she has only begun to test her powers -- a frightening thought for the rest of the strawweight division. During her three-fight reign as champion, the Polish superstar has connected on 522 significant strikes, per FightMetric; her opponents have landed just 191.
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